[BusyBox] [PATCH] Do not export all make variables

[Peter Kjellerstedt]

This patch removes the export of all make variables by default.
Instead it just exports what is necessary (in this case $(srctree)
needs to be exported for the configuration tool to work).

The reason for this is that at least the version of make that
I use (gmake 3.79.1) exported the $(skip-makefile) variable
even though it contains a dash (which the make manual states 
that it should not do). I could have used unexport for this
variable, but since I have experienced problems with exporting
all variables by default before, I preferred to do it this 
way instead.
 
//Peter
 <<export.patch>> 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: export.patch
Type: application/octet-stream
Size: 847 bytes
Desc: export.patch
Url : http://lists.busybox.net/pipermail/busybox/attachments/20041027/52f1fdd0/attachment.obj